Journal ArticleDOI
A review of the structure, and fundamental mechanisms and kinetics of the leaching of chalcopyrite.
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TLDR
There is general agreement in the literature that chalcopyrite leaching is significantly affected by solution redox potential with an optimum E(h) range suggesting the participation of leach steps that involve both oxidation and reduction.About:
This article is published in Advances in Colloid and Interface Science.The article was published on 2013-09-01. It has received 338 citations till now. The article focuses on the topics: Chalcopyrite & Leaching (metallurgy).read more
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Kinetics of oxidative degradation/mineralization pathways of the antibiotic tetracycline by the novel heterogeneous electro-Fenton process with solid catalyst chalcopyrite
Natija Barhoumi,Natija Barhoumi,Hugo Olvera-Vargas,Nihal Oturan,David Huguenot,Abdellatif Gadri,Salah Ammar,Enric Brillas,Mehmet A. Oturan +8 more
TL;DR: In this article, the degradation of solutions of the antibiotic tetracycline (TC) has been studied by a novel electrochemical advanced oxidation process, consisting in electro-Fenton (EF) process using chalcopyrite as heterogeneous catalyst.
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Chalcopyrite hydrometallurgy at atmospheric pressure: 1. Review of acidic sulfate, sulfate–chloride and sulfate–nitrate process options
TL;DR: In this paper, the authors present a review of current knowledge in respect of sulfate-sulfuric acid systems and highlight potentially rewarding areas for future research, including the potential to exploit alternative oxidants to ferric ion.
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Current scenario of chalcopyrite bioleaching: a review on the recent advances to its heap-leach technology.
TL;DR: Advances in the designing of heap bioleaching plant along with microbial and environmental factors of importance have been reviewed with conclusions into the future prospects of chalcopyriteBioleaching.
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A Review of the Occurrence and Promising Recovery Methods of Rare Earth Elements from Coal and Coal By-Products
TL;DR: In this article, a review of the abundance, mode of occurrence, and recovery methods of rare earth elements in coal and coal by-products is provided along with issues associated with their use with coal resources.
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Heap Leaching Technology—Current State, Innovations, and Future Directions: A Review
TL;DR: Heap leaching is a well-established extractive metallurgical technology enabling the economical processing of various kinds of low-grade ores, which could not otherwise be exploited as mentioned in this paper.
References
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Role and contribution of pure and mixed cultures of mesophiles in bioleaching of a pyritic chalcopyrite concentrate
TL;DR: In this paper, the capacity of pure and mixed cultures of mesophilic bacteria for bio-leaching of a low grade, pyritic chalcopyrite concentrate was compared and it was shown that mixed cultures performed better than pure cultures with the highest extraction of copper (62.1% Cu) being achieved by MixA.
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Electrochemical bioleaching of high grade chalcopyrite flotation concentrates in a stirred bioreactor
TL;DR: In this paper, the authors used a typical flotation concentrate from the Sarcheshmeh copper processing complex (located in the south-east of Iran) and mixed mesophilic as well as moderately thermophilic microorganisms, leaching experiments were performed in a stirred bioreactor.
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A case of ferrous sulfate addition enhancing chalcopyrite leaching
TL;DR: In this article, it was found that several chalcopyrite samples were more effectively leached in ferrous sulfate solution than in ferric sulfate, and the amount of extracted copper increased markedly with increasing ferrous oxide addition and decreasing pH.
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Passivation of chalcopyrite during its chemical leaching with ferric ion at 68 °C
TL;DR: In this article, the passivation of chalcopyrite in the presence of ferric sulphate solutions was investigated at 68°C and the effect of different variables (pulp density, pH and presence of oxygen) on both the copper dissolution rate and the formation of solid compounds was studied.
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Acidic sulphate leaching of chalcopyrite concentrates in presence of pyrite
TL;DR: In this paper, pyrite was added to act as a catalyst to enhance the leaching rate of the copper concentrate, and a copper recovery higher than 80% in 24h was achieved at a redox potential of 410mV vs Ag, AgCl, a temperature of 85°C, 15g/L of initial acid concentration, a solid content of 7.8% (w/v), a total initial iron concentration 5 ǫ g/L and pyritic to copper sulphide minerals mass ratio 2:1.